Operation CHARM
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GMC Truck
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1986
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K 3500 Truck 4WD L6-292 4.8L
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Repair and Diagnosis
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Cruise Control
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Cruise Control Switch
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Testing and Inspection
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Release Switch Test
Release Switch Test
Fig. 16 Release switch diagnostic chart. Custom Cruise III:
Refer to
Fig. 16
to check cruise
release switch
and related wiring.